Title (fr)

Publication

Application

Priority

DE 19721546 A 19970523

EP 9802929 W 19980519

Abstract (en)

[origin: DE19721546C1] Production of double layer cathode precursor plates for molten carbonate fuel cells involves: (a) producing cerium-activated cobalt oxide by co-precipitation from salt solutions and combining with lithium carbonate to form a suspension; (b) applying the suspension as a second cathode layer (2b) on a first cathode layer (2a) and drying; and (c) sintering under reducing conditions at 500-700 deg C. Also claimed is the use of the above double layer cathode precursor plates in which, on start-up of assembled fuel cells containing the precursor plates, the cobalt in the second cathode layer is oxidised to cobalt oxide which reacts with the lithium carbonate to form cerium oxide-doped lithium cobaltite and the nickel of the first cathode layer is oxidised and lithiated by the lithium/potassium carbonate melt. Further claimed is a double-layer cathode for a molten carbonate fuel cell, the cathode consisting of a first cathode layer (2a), preferably of lithiated nickel oxide, and a second layer (2b) of cerium-activated lithium cobaltite, preferably activated with cerium/zirconium/yttrium mixed oxide.